I honestly don't know. I've read a couple of them which are actually pretty good but the majority i've read are always so bad. Sometimes the pacing's off, or the characters are just annoying.
I have tried reading many, there are a couple that has stuck to me and are very good but most I end up dropping. Its a combination of pointless cliche drama, worthless villains, deviation from the plot line till the point of no return and just plain bad main lead.
facts. a lot of them are very bad. but there's a good few that stand out. many romance manhuas most especially have similar and basic plots (ceo, insert toxic relationship etc). sometimes it's the translation that is off. other times how it is made is the problem lol.
let me know your thoughts